Myth: You can't donate blood if you smoke or drink. Fact: Smoking or occasional drinking doesn't automatically disqualify you. But avoid alcohol for at least 24 hours before donating to We all know smoking and vaping isn't great for your health. But it doesn't stop you from being a blood or plasma donor. Just make sure to wait one hour after donating Is Blood Donation Good for Health? Dr. Karuna Kumar Can you donate blood if you smoke? What Arthritis and Chronic Pain Patients Need to Know About the Vaping Crisis